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Chapter 11 Forces in Fluids
Chp 11 Vocab from pearson book
11
Science
8th Grade
05/03/2011

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Term
pressure
Definition
to the force exerted on a surface divided bu the total area over which the force is exerted
Term
pascal
Definition
si unit of pressure
Term
fluid
Definition
a material that can easily flow
Term
barometer
Definition
a device in which air pressure can be measured
Term
density
Definition
of a substance is mass per unit volume
Term
buoyant force
Definition
an upward force exerted by water and other fluids
Term
Archimedes principle
Definition
states that the buoyant force acting on a submerged object is equal to the weight of the volume and fluid displaced by it
Term
pascals principle
Definition
states that pressure increases by the same amount throughout an enclosed or confined fluid
Term
hydraulic system
Definition
uses liquids to transmit pressure and multiply force in a confined fluid
Term
Bernoulli's principle
Definition
the rule that a stream of fast-moving fluid exerts less pressure than the surrounding fluid
Term
lift
Definition
an upward force
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